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Finding the Fourth Proportional to 18,143,986.23, 25,038,689.96 and 9,995,224.23

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Solution

The fourth proportional to 18,143,986.23, 25,038,689.96 and 9,995,224.23 is: 13,793,403.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143,986.23 : 25,038,689.96 = 9,995,224.23 : x
  2. Step 2: Convert to fraction form
    18,143,986.23/25,038,689.96 = 9,995,224.23/x
  3. Step 3: Cross multiply
    18,143,986.23x = 25,038,689.96 × 9,995,224.23
  4. Step 4: Simplify right side
    18,143,986.23x = 250,267,320,671,059.09
  5. Step 5: Solve for x
    x = 250,267,320,671,059.09/18,143,986.23
  6. Step 6: Final answer
    x = 13,793,403.36

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.